Oil burner



A. EQ GRANT Nov.v 4, 1930.

OIL BURNER Evtl 5.

ATTORNEY CTE Patented Nov. 4, 1.930

UNITED STATES PATENT OFFICE ALBERT E. GRANT, OF NEW YORK, N. Y., ASSIGNOR TO GRANT HEAT' MACHINE CORPO- RATION, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE oir. BURNER Application led February 11, 1928. Serial No. 253,580.

My invention relates to oil burners and the' m that one of the burners may serve as a pilot light for the other burner.

The novel features are set forth in the following specification The drawing shows a burner embodying my invention, connected in operative relation to an oil feeding device and air pump construction for the purpose of illustrating the operation of the burners forming the subject matter of this application. The burner 2o is shown in a longitudinal sectional view, and

comprises a casing A, adapted to be connected to the casing of an air conduit B, thru which air may be supplied from an air blower or pump C, and thecasing A is also provided with conduits D and D1 respectively, in open communication with oil supply pipes D2 and D3 respectively, which conduct oil from separate oil chambers E and E1 in which oil is maintained at predetermined levels, and

whereby oil is maintained at a corresponding level in the oil chambers of the burners. Formed in the casing A is a chamber A1 having an inlet passage B1 in open communication with the air conduit B to which it is held by means of the nut and rod construction B2 as illustrated.

The upper end of the casing A is provided with an annular circular chamber A2 which is in opencommunication with the chamber A1 by air passages AS--A3 respectively.

The casing A is provided with aI tubular portion A having a smaller annular chamber F formed therein in which is located a cylindrical wick F1 of porous refractory material freely removable therefrom after a central spreader Gis first removed. The spreader G rests in a central bore G1 formed in the central tubular portion H of the casing A and supported by vertically extending ribs H1 formed integral therewith. An air deflecting collar I, shaped substantially as shown, is also supported by the central tubular portion H, to deflect air downward into the chamber A2. The top of the burner comprises a ring J, formed in a separate casting to permit of easy moulding of the casing A and provides an annular passage K, for the gaseous fuel formed by the mixture of air passing thru the chamber A2 when mixed with the hydrocarbon gas generated by heating the oil in said chamber. l

TWhen the several parts are assembled as shown and the oil is maintained at the level indicated in the chamber A2 and at a level in the chamber F at a point just below the top of the wick F, the oil is ignited by a flame applied to the top of the'wick. Air received from the blower flows thru the casing A upward thru the central passage to supply the central burner which soon becomes hot enough to heat the entire casing and the oil in the large burner then is converted into gas which flows upward thru the annular passage K. The air also Hows thru the passages A3 and is dellected thru the chamber A2 and mixed with the gas, generated therein, and the mix' ture is ignited by the small burner referred to as the Pilot burner. Proper automatic means are provided for use with this burner whereby the oil may be shut olf from the large burner comprising chamber A2 which means form the subject matter of a separate application for patent, and are therefore not shown or described herein. A burner constructed in accordance with the drawings built twice the size of the illustration has been built and operated in a very satisfactory manner.

Having thus described my invention I claim as new l. In combination, two independent oil burners located adjacent to each other and adapted to be operated separately or simultaneously, an air chamber and conduits for air leading therefrom to each of said burners, said burners comprising annular chambers for oil, one of which is open and exposed at Vits upper end directly to the atmosphere, and

means for deflecting air from said air chamber downwardly into said open annular oil chamber to provide a fuel mlxture.

2. In combination, two independent oil burners comprising an outer annular open chamber for oil and a separate burner located adjacent thereto and adapted to serve as a pilot light for said outer burner, and means for leading air and oil to supply each of said burners separately, and a. spreader for said separate burner to deflect air thereover as set forth.

In testimony whereof I have aiiixed my signature.

ALBERT E. GRANT. 

